If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

Can you name an animal whose killing cannot be performed without spilling your own blood?

Krish is 45 years old and his mother Crishtina is 73 years old.

Can you find out how many years ago, his mother was three times his age?

What is always in front of you but can’t be seen?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

1. Where does Easter come from before Valentine's Day?

2. Do you know what is in the middle of Valentine's?

3. What did the lady bee say to the man bee on the occasion of Valentine's Day

What does a man do only once in his lifetime, but women do once a year after they are 29?

I have one of the three numbers: 1, 2, or 3 in my mind. I speak only truth. You can ask me just one question for which I will only reply in yes or no or don't know. What question will you ask from me so that you are able to know the number?

Women do it once a year after they turn 19 but men get to do it only once in a lifetime. What is it?

Alex is stranded on an island covered in forest.
One day, when the wind is blowing from the west, lightning strikes the west end of the island and sets fire to the forest. The fire is very violent, burning everything in its path, and without intervention the fire will burn the whole island, killing the man in the process.

There are cliffs around the island, so he cannot jump off.

How can the Alex survive the fire? (There are no buckets or any other means to put out the fire)